<template>
    <div class="app-container">
        <el-form label-width="120px">
            <el-form-item label="信息描述">
                <el-tag type="info">excel模版说明</el-tag>
                <el-tag>
                    <i class="el-icon-download"/>
                    <a :href="'/static/01.xlsx'">点击下载模版</a>
                </el-tag>
            </el-form-item>

            <el-form-item label="选择Excel">
                <el-upload
                    ref="upload"
                    :auto-upload="false"
                    :on-success="fileUploadSuccess"
                    :on-error="fileUploadError"
                    :disabled="importBtnDisabled"
                    :limit="1"
                    :action="BASE_API+'/eduservice/subject/addSubject'"
                    name="file"
                    accept="application/vnd.ms-excel">
                    <el-button slot="trigger" size="small" type="primary">选取文件</el-button>

                    <el-button
                        :loading="loading"
                        style="margin-left: 10px;"
                        size="small"
                        type="success"
                        @click="submitUpload">
                        上传到服务器
                    </el-button>
                </el-upload>
            </el-form-item>
        </el-form>
    </div>
</template>
<script>
    export default {
        data() {
            return {
                BASE_API: process.env.BASE_API, // 接口API地址
                importBtnDisabled: false, // 按钮是否禁用,
                loading: false
            }
        },
        created() {

        },
        methods: {
            //点击按钮上传文件到接口里面
            submitUpload() {
                this.importBtnDisabled = true
                this.loading = true
                this.$refs.upload.submit()
            },
            //上传成功
            fileUploadSuccess() {
                this.loading = false
                this.$message({
                    type: 'success',
                    message: "添加课程分类成功"
                })
                //跳转到列表
                this.$router.push({path:'/subject/list'})
            },
            //上传失败
            fileUploadError() {
                this.loading = false
                this.$message({
                    type: 'success',
                    message: "添加课程分类失败"
                })
            }
        }
    }
</script>